How to create satellite-derived bathymetry using Landsat 8 images through ENVI or ArcGIS Pro software? are any recommendation steps/video tutorials? appreciate it if you can attach any related file or link about it
Shahrul Nizam
Creating a satellite-derived bathymetry map using ENVI or ArcGIS Pro involves a series of steps. Here is an overview of the general workflow:
It's worth noting that creating satellite-derived bathymetry maps can be a complex and specialized process that requires advanced knowledge and expertise. Therefore, it's recommended to consult with experts in the field or follow detailed tutorials if you fail to create these types of maps.
Barely any light from a very narrow bandwidth even reaches the bottom, and at the bottom, excepting in cases like reflective white sand, is mostly absorbed, and then still has to travel back up through the water column, through the atmosphere, to the satellite sensor. This is the ideal case, which ignores any diffusion from particles like sediments or plankton in suspension, aerosols in the atmospheric pathway, and reflection and refraction caused by wave action of the fluid surface. "The Landsat 8-derived SDB estimates derived from the blue/green band ratio exhibited a water attenuation extinction depth of 6 meters" fromTechnical Report Evaluating the Potential for Near-Shore Bathymetry on the Ma...
"Light in the Ocean" at https://manoa.hawaii.edu/exploringourfluidearth/physical/ocean-depths/light-ocean
"The depth of the water not only affects the colors of light that are noticeable underwater, it also affects the intensity, or amount of light. Within the first 10 m, water absorbs more than 50 percent of the visible light energy (Fig. 9.9). Even in clear tropical water only about 1 percent of visible light—mostly in the blue range—penetrates to 100 m. Light attenuation is the gradual decrease in light intensity as it travels through matter."
Here are a few resources that can help you with these steps:
- A paper by Nguyen et al. (2019) titled "Estimating Bathymetry from Landsat 8 Imagery in Shallow Water Environment Using an Empirical Approach". This paper describes an empirical method for bathymetry estimation using Landsat 8 imagery and provides detailed instructions for the process.
- A tutorial video by Harris Geospatial that demonstrates how to extract bathymetry information from Landsat 8 imagery using ENVI software. Here's the link: https://www.youtube.com/watch?v=ESNtPOnB-_I
- A tutorial video by Esri that shows how to create a bathymetry map using the Benthic Terrain Modeler in ArcGIS Pro. Here's the link: https://www.youtube.com/watch?v=49Jnsrxp12o
I hope these resources help you with your bathymetry project!
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